Hi guys,
I've had the Samsung 22" 225BW for a few years now, and over the few years I've noticed that colours on my monitor are a little off, overall "cooler", my friend told me it has something to do with the blues?

the cheapest way and one that might work for you is in this journal: "Monitor Calibration for a few Dollars or Euros"
which you can find here: deviantART: Gellidius's Journal
if you don't want to do it that way, then you'll have to buy calibrating equipment.